Abstract
To capture the influence of temperature variation of pile–soil interface on the response of a single energy pile, numerical simulation and theoretical analysis were adopted in this paper. The temperature variation mechanism of a single energy pile was clarified using numerical simulation, and the temperature variation model of the pile–soil interface was established. Considering the influence of temperature variation on the conventional load transfer model of the pile–soil interface, the improved hyperbolic functions were proposed, and the parameters related to the improved load transfer model were determined. To predict the response of a single energy pile considering the temperature variation of the pile–soil interface, an iterative algorithm was developed using load transfer methods. Comparisons of the load-settlement response of three well-documented cases between the present computation results and the results derived from other methods were made to verify the reliability of the calculation method. Furthermore, a parameter analysis was carried out to assess the influence of soil properties and the parameters related to the load transfer models on the thermomechanical response of a single energy pile.
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